diff --git a/README.md b/README.md
index 4bbca55..d1f1ca8 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,7 @@
 
 [Task Listing][todo] | [~~BBS~~][issues] | [Published][artifact]
 
-[说明书][book] | [FindInTelegram][tg-account]
+**[说明书][book] | [FindInTelegram][tg-account]**
 
 <br>
 
diff --git a/build.gradle b/build.gradle
index 0fa5a50..9e60e84 100644
--- a/build.gradle
+++ b/build.gradle
@@ -14,7 +14,7 @@ mainClassName = 'cc.sukazyo.cono.morny.ServerMain'
 
 repositories {
 	mavenCentral()
-	maven { name '-ws'; url 'https://mvn.sukazyo.cc' }
+	maven { name '-ws'; url 'https://mvn.sukazyo.cc/releases' }
 }
 
 String untitled (String lib, String upd = null) {
diff --git a/gradle.properties b/gradle.properties
index 97a0d67..eb58aeb 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,12 +1,12 @@
 ## Core
 
-VERSION = 0.7.1.3
+VERSION = 0.7.2.1
 
 CODENAME = fuzhou
 
 # dependencies
 
-libSpotbugsVersion = 4.5.3
+libSpotbugsVersion = 4.7.2
 
 libUntitledVersionMajor = 1
 
@@ -14,4 +14,4 @@ libMessivaVersion = 0.1.0.1
 
 libJavaTelegramBotApiVersion = 5.6.0
 
-libJunitVersion = 5.8.2
+libJunitVersion = 5.9.0
diff --git a/src/main/java/cc/sukazyo/cono/morny/GradleProjectConfigures.java b/src/main/java/cc/sukazyo/cono/morny/GradleProjectConfigures.java
index 3d2a77a..8608a79 100644
--- a/src/main/java/cc/sukazyo/cono/morny/GradleProjectConfigures.java
+++ b/src/main/java/cc/sukazyo/cono/morny/GradleProjectConfigures.java
@@ -4,7 +4,7 @@ package cc.sukazyo.cono.morny;
  * the final field that will be updated by gradle automatically.
  */
 public class GradleProjectConfigures {
-	public static final String VERSION = "0.7.1.3";
+	public static final String VERSION = "0.7.2.1";
 	public static final String CODENAME = "fuzhou";
-	public static final long COMPILE_TIMESTAMP = 1654858585641L;
+	public static final long COMPILE_TIMESTAMP = 1664590869773L;
 }
diff --git a/src/main/java/cc/sukazyo/cono/morny/bot/command/GetUsernameAndId.java b/src/main/java/cc/sukazyo/cono/morny/bot/command/GetUsernameAndId.java
index 1b406c7..bb06ed2 100644
--- a/src/main/java/cc/sukazyo/cono/morny/bot/command/GetUsernameAndId.java
+++ b/src/main/java/cc/sukazyo/cono/morny/bot/command/GetUsernameAndId.java
@@ -47,7 +47,7 @@ public class GetUsernameAndId implements ITelegramCommand {
 			}
 		}
 		
-		final GetChatMemberResponse response = MornyCoeur.extra().exec(
+		final GetChatMemberResponse response = MornyCoeur.getAccount().execute(
 				new GetChatMember(event.message().chat().id(), userId)
 		);
 		
diff --git a/src/main/java/cc/sukazyo/cono/morny/bot/event/EventListeners.java b/src/main/java/cc/sukazyo/cono/morny/bot/event/EventListeners.java
index 3ff7ef6..0b300e2 100644
--- a/src/main/java/cc/sukazyo/cono/morny/bot/event/EventListeners.java
+++ b/src/main/java/cc/sukazyo/cono/morny/bot/event/EventListeners.java
@@ -15,13 +15,16 @@ public class EventListeners {
 	public static final OnUserRandoms USER_RANDOMS = new OnUserRandoms();
 	public static final OnCallMsgSend CALL_MSG_SEND = new OnCallMsgSend();
 	public static final OnMedicationNotifyApply MEDICATION_NOTIFY_APPLY = new OnMedicationNotifyApply();
+	public static final OnRandomlyTriggered RANDOMLY_TRIGGERED = new OnRandomlyTriggered();
 	
 	public static void registerAllListeners () {
 		EventListenerManager.addListener(
 				ACTIVITY_RECORDER,
 				UPDATE_TIMESTAMP_OFFSET_LOCK,
+				/* write functional event behind here */
 //				KUOHUANHUAN_NEED_SLEEP,
 				COMMANDS_LISTENER,
+				RANDOMLY_TRIGGERED,
 				USER_RANDOMS,
 				USER_SLASH_ACTION,
 				INLINE_QUERY,
diff --git a/src/main/java/cc/sukazyo/cono/morny/bot/event/OnRandomlyTriggered.java b/src/main/java/cc/sukazyo/cono/morny/bot/event/OnRandomlyTriggered.java
new file mode 100644
index 0000000..d710459
--- /dev/null
+++ b/src/main/java/cc/sukazyo/cono/morny/bot/event/OnRandomlyTriggered.java
@@ -0,0 +1,26 @@
+package cc.sukazyo.cono.morny.bot.event;
+
+import cc.sukazyo.cono.morny.bot.api.EventListener;
+
+public class OnRandomlyTriggered extends EventListener {
+	
+	/**
+	 * function CODE_IK0XA1
+	 */
+	//	@Override
+//	public boolean onMessage (@Nonnull Update update) {
+//
+//		if (update.message().text() == null) return false;
+//
+//		if (update.message().text().contains("急") && Math.random()<(1d/20)) {
+//			MornyCoeur.extra().exec(new SendMessage(
+//					update.message().chat().id(),
+//					"急也没用"
+//			));
+//		}
+//
+//		return false;
+//
+//	}
+	
+}